RPI is louder, with a deeper throatier sound. It also produces more horse power. If sound is an issue they do sell silencers that reduce the drone greatly without reducing the output. By the way, RPI is cheaper.
Originally Posted by H F
How loud is ur Remus inside the car with the windows up.. Im leaning toward remus cause everyone one is saying its not verry loud.. i just dont want that loud rumble inside the car especially on long trips....
[B]2008 550 - Carbon Black/Black - M-sport, Cold Weather, Premium, NAV, Comfort Access, Logic 7 (LOADED, every option except night vision)
Previous 3 cars (the 550 is my 38th car):
2005 530i - Prem, Sport, NAV
2006 Jeep SRT-8
2003 Infiniti G35 coupe